Original ArticleContinuous versus intermittent cardiac output measurement in cardiac surgical patients undergoing hypothermic cardiopulmonary bypass*
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Cited by (49)
The accuracy of PiCCO® in measuring cardiac output in patients under therapeutic hypothermia: Comparison with transthoracic echocardiography
2018, Medicina IntensivaCitation Excerpt :Furthermore, as echocardiography is not influenced by temperature changes, we concluded that lower body temperature diminishes accuracy of PiCCO measurements. This interference is called “thermal noise”, and several authors proved its influence on the precision and accuracy of thermodilution measurements.13–16 To evaluate a certain measurement method, one should consider both precision – closeness of agreement between replicate measurements – and accuracy – closeness of agreement between a measurement value and its true value.17
Accuracy of continuous thermodilution cardiac output monitoring by pulmonary artery catheter during therapeutic hypothermia in post-cardiac arrest patients
2014, ResuscitationCitation Excerpt :There are very scarce data on TDCCO in hypothermic patients in general and no data in cooled post-cardiac arrest patients. In line with our results, 2 other studies showed TDCCO to be inaccurate when compared with ITDCO in cardiac surgery patients during the early hypothermic phase post-cardiopulmonary bypass.13,14 Apart from being the first to focus on cooled post-cardiac arrest patients, our study adds further information to these data since our patients had a much lower body temperature and since a larger proportion of our patients had a severely depressed left ventricular function which makes adequate assessment of CO more challenging.
Clinical evaluation of the FloTrac/Vigileo™ system and two established continuous cardiac output monitoring devices in patients undergoing cardiac surgery
2007, British Journal of AnaesthesiaCitation Excerpt :Despite the development and the increased clinical use of different less invasive devices in the last years, continuous CO monitoring using the PAC remains the standard, especially when monitoring of pulmonary artery pressures is indicated. Corresponding to previous investigations,22 26 we found a closer agreement between continuous CO monitoring and intermittent thermodilution in the pre-intervention period than in the early postoperative period. However, these changes of accuracy were less distinct than that reported previously.
Measurement of cardiac output before and after cardiopulmonary bypass: Comparison among aortic transit-time ultrasound, thermodilution, and noninvasive partial CO<inf>2</inf> rebreathing
2004, Journal of Cardiothoracic and Vascular AnesthesiaComparison of thermodilution bolus cardiac output and doppler cardiac output in the early post-cardiopulmonary bypass period
2003, Journal of Cardiothoracic and Vascular AnesthesiaCitation Excerpt :Early post-CPB, the body regional temperature is unstable and uneven, which can create errors in estimating TCO.4,15 One study16 that compared continuous thermodilution cardiac output (CCO) and bolus thermodilution cardiac output (BCO) before and after CPB found no correlation (r = 0.27) between CCO and BCO early post-CPB, although a highly significant correlation (r = 0.872) and a small bias (−0.02 L) before CPB and more than 45 minutes after CPB were identified. The inhomogenous rewarming of different body sites was considered the cause of the poor correlation between CCO and BCO early post-CPB in that study.
Cardiac output measurement after coronary artery bypass grafting using bolus thermodilution, continuous thermodilution, and whole-body impedance cardiography
2003, Journal of Cardiothoracic and Vascular AnesthesiaCitation Excerpt :Immediately after the operation, patients are hypothermic, vasoconstricted, might bleed somewhat, and extracellular volume might be increased because of the cardiopulmonary bypass. Thermal noise from hypothermia, infusion of fluids, and warming blankets might induce errors in the thermodilution measurements, both in the bolus and continuous methods.7,8,31 In the present study, the vulnerability of the thermodilution technique in thermally unstable conditions was evident in the rewarming phase when there was a trend of decreasing CO using the continuous thermodilution method, whereas the trend by whole-body impedance cardiography and bolus thermodilution was for CO to increase.
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Presented in part at the European Society of Anaesthesiologists Annual Meeting, February 11, 1994, Brussels, Belgium; and at the Ninth Annual Meeting of the European Association of Cardiothoracic Anaesthesiologists, June 1 to 4, 1994, Turku, Finland.